One of the strangest things about the Zeppelin Knot (or Bend) is that it has inexplicably become virtually lost to the world. Although it is one of the best ways to connect two ropes, most people have never heard of it much less know how to tie it!
It is exceptionally secure and shake-resistant in all materials and its perfect symmetry makes it simple to check. It's also remarkably easy to untie after heavy strain, even when wet. These properties made it the knot of choice for Charles Rosendahl, commander of the dirigible Los Angeles during the 1920's. He would only allow this one knot to be used for mooring his zeppelin, which is how the Zeppelin Bend also came to be known as the